ftrace_func_t ftrace_trace_function __read_mostly = ftrace_stub;
struct ftrace_ops global_ops;
-#if ARCH_SUPPORTS_FTRACE_OPS
-static void ftrace_ops_list_func(unsigned long ip, unsigned long parent_ip,
- struct ftrace_ops *op, struct ftrace_regs *fregs);
-#else
-/* See comment below, where ftrace_ops_list_func is defined */
-static void ftrace_ops_no_ops(unsigned long ip, unsigned long parent_ip);
-#define ftrace_ops_list_func ((ftrace_func_t)ftrace_ops_no_ops)
-#endif
+/* Defined by vmlinux.lds.h see the commment above arch_ftrace_ops_list_func for details */
+void ftrace_ops_list_func(unsigned long ip, unsigned long parent_ip,
+ struct ftrace_ops *op, struct ftrace_regs *fregs);
static inline void ftrace_ops_init(struct ftrace_ops *ops)
{
}
}
- entry = tracefs_create_file("function_profile_enabled", 0644,
- d_tracer, NULL, &ftrace_profile_fops);
+ entry = tracefs_create_file("function_profile_enabled",
+ TRACE_MODE_WRITE, d_tracer, NULL,
+ &ftrace_profile_fops);
if (!entry)
pr_warn("Could not create tracefs 'function_profile_enabled' entry\n");
}
struct dentry *parent)
{
- trace_create_file("set_ftrace_filter", 0644, parent,
+ trace_create_file("set_ftrace_filter", TRACE_MODE_WRITE, parent,
ops, &ftrace_filter_fops);
- trace_create_file("set_ftrace_notrace", 0644, parent,
+ trace_create_file("set_ftrace_notrace", TRACE_MODE_WRITE, parent,
ops, &ftrace_notrace_fops);
}
static __init int ftrace_init_dyn_tracefs(struct dentry *d_tracer)
{
- trace_create_file("available_filter_functions", 0444,
+ trace_create_file("available_filter_functions", TRACE_MODE_READ,
d_tracer, NULL, &ftrace_avail_fops);
- trace_create_file("enabled_functions", 0444,
+ trace_create_file("enabled_functions", TRACE_MODE_READ,
d_tracer, NULL, &ftrace_enabled_fops);
ftrace_create_filter_files(&global_ops, d_tracer);
#ifdef CONFIG_FUNCTION_GRAPH_TRACER
- trace_create_file("set_graph_function", 0644, d_tracer,
+ trace_create_file("set_graph_function", TRACE_MODE_WRITE, d_tracer,
NULL,
&ftrace_graph_fops);
- trace_create_file("set_graph_notrace", 0644, d_tracer,
+ trace_create_file("set_graph_notrace", TRACE_MODE_WRITE, d_tracer,
NULL,
&ftrace_graph_notrace_fops);
#endif /* CONFIG_FUNCTION_GRAPH_TRACER */
ftrace_free_mem(NULL, start, end);
}
+int __init __weak ftrace_dyn_arch_init(void)
+{
+ return 0;
+}
+
void __init ftrace_init(void)
{
extern unsigned long __start_mcount_loc[];
* Note, CONFIG_DYNAMIC_FTRACE_WITH_REGS expects a full regs to be saved.
* An architecture can pass partial regs with ftrace_ops and still
* set the ARCH_SUPPORTS_FTRACE_OPS.
+ *
+ * In vmlinux.lds.h, ftrace_ops_list_func() is defined to be
+ * arch_ftrace_ops_list_func.
*/
#if ARCH_SUPPORTS_FTRACE_OPS
-static void ftrace_ops_list_func(unsigned long ip, unsigned long parent_ip,
- struct ftrace_ops *op, struct ftrace_regs *fregs)
+void arch_ftrace_ops_list_func(unsigned long ip, unsigned long parent_ip,
+ struct ftrace_ops *op, struct ftrace_regs *fregs)
{
__ftrace_ops_list_func(ip, parent_ip, NULL, fregs);
}
-NOKPROBE_SYMBOL(ftrace_ops_list_func);
#else
-static void ftrace_ops_no_ops(unsigned long ip, unsigned long parent_ip)
+void arch_ftrace_ops_list_func(unsigned long ip, unsigned long parent_ip)
{
__ftrace_ops_list_func(ip, parent_ip, NULL, NULL);
}
-NOKPROBE_SYMBOL(ftrace_ops_no_ops);
#endif
+NOKPROBE_SYMBOL(arch_ftrace_ops_list_func);
/*
* If there's only one function registered but it does not support
synchronize_rcu();
if ((type & TRACE_PIDS) && pid_list)
- trace_free_pid_list(pid_list);
+ trace_pid_list_free(pid_list);
if ((type & TRACE_NO_PIDS) && no_pid_list)
- trace_free_pid_list(no_pid_list);
+ trace_pid_list_free(no_pid_list);
}
void ftrace_clear_pids(struct trace_array *tr)
if (filtered_pids) {
synchronize_rcu();
- trace_free_pid_list(filtered_pids);
+ trace_pid_list_free(filtered_pids);
} else if (pid_list && !other_pids) {
/* Register a probe to set whether to ignore the tracing of a task */
register_trace_sched_switch(ftrace_filter_pid_sched_switch_probe, tr);
void ftrace_init_tracefs(struct trace_array *tr, struct dentry *d_tracer)
{
- trace_create_file("set_ftrace_pid", 0644, d_tracer,
+ trace_create_file("set_ftrace_pid", TRACE_MODE_WRITE, d_tracer,
tr, &ftrace_pid_fops);
- trace_create_file("set_ftrace_notrace_pid", 0644, d_tracer,
- tr, &ftrace_no_pid_fops);
+ trace_create_file("set_ftrace_notrace_pid", TRACE_MODE_WRITE,
+ d_tracer, tr, &ftrace_no_pid_fops);
}
void __init ftrace_init_tracefs_toplevel(struct trace_array *tr,